Welcome to HVAC-Talk.com, a non-DIY site and the ultimate Source for HVAC Information & Knowledge Sharing for the industry professional! Here you can join over 150,000 HVAC Professionals & enthusiasts from around the world discussing all things related to HVAC/R. You are currently viewing as a NON-REGISTERED guest which gives you limited access to view discussions

To gain full access to our forums you must register; for a free account. As a registered Guest you will be able to:

Participate in over 40 different forums and search/browse from nearly 3 million posts.

It could be oil return. If you dont draw the oil back your amps will rise as it runs. It may start normal then rise up. I would be thinking that route.
I have heard some will mix in some POE to help draw mineral back?

It could be oil return. If you dont draw the oil back your amps will rise as it runs. It may start normal then rise up. I would be thinking that route.
I have heard some will mix in some POE to help draw mineral back?

B1978 I think that you are on to something here. A scroll compressors life depends on oil and is not forgiving if it lack oil return. The symptoms here are very clear that that scrolls are locking up. A very common cause happens when that scrolls lack oil and grind on themselves. Once this happens its over and the problem only gets worse when you have fine metal fragments floating around. If this is the problem then the only solution is to R/R the compressor.

The interesting part however is preventing the next failure, Many recommend the installation of an over sized Suction dryer, due to the fact that a standard 16 Cubic dryer will not pick up this fine particles in the system.

Air flow will also need to be checked, and if low this will cause oil migration to the evap coil.

As for mixing oil this is not recommended as 41O is a blend and requires the use of POE oil which has an Azeotropic behavior. If Mineral oil is mixed two separate liquids would form and oil loss will occur.

Completely agree with AlcoMech. Change compressor, install suction dryer. When you get it up and running, you must find what caused the comp failure, or you will be doing it again...just a matter of time.
Like I tell my guys constantly....Keep asking yourself.."why"!.. ;compressor failed?,why?... inadequate oil return?, why?..inadequate refrigerant flow?, why?...restricted refrigerant flow trapping oil?,why? etc.
We get paid to fix the problem, not just a symptom of the problem.